Metal sheave



G. A. FORD.

METAL SHEAVE.

(No Model.)

I Patented July 28, 1885.

-ll n I WITNESSES (Q0 ,w/rwi GEORGE A. FORD, OF CLEVELAND, OHIO.

METAL SHEAVE.

SPECIFICATION forming part of Letters Patent No. 323,136, dated July 28, 1885.

Application filed June 17, 1885. (No model.)

To all whom it may concern:

Be it known that I, GEORGE A. Form, of Cleveland, in the county of Guyahoga and State of Ohio, have invented certain new and useful Improvements in Metal Sheaves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in metal sheaves, the object being to provide in casting the sheaves a series of pockets located around the axial bore of the sheaves,with the outer line of the pocket made angular, so as to be or open on the face of the hub, to the end that graphite or other suitable lubricant may be packed in the pockets to render the sheaves self-lubricating, and without increasing the initial cost of the sheaves.

WVith this object in View my invention con sists in certain features of construction and in combination of parts, hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is an elevation in section through the center of/ 5 the sheaves and easing illustrating my invention. Fig. 2 is an elevation of the hub of the sheaves. tion in transverse section Fig. 1.

A represents the sheave, and B B the easing. In Fig. l a section of these parts is shown in position with the axial pin removed.

or represents pockets or depressions that are cast in the hub of the sheave around the axial bore. These pockets are filled with some preparation of graphite or other suitable lubrieant that is susceptible of being packed firmly. The pockets are so arranged that as the sheave turns on the axial pin every part of the latter is brought in contact with the lubricant. The pockets nearest the respective showing the end Fig. 3 is an elevaon the line of xx,

ends of the hub are made angular, as shown at the right hand in Fig. 1, or curved, if prec axis, as shown at in either case the pocket e face of the hub, thus ferred, or set oblique to th the left hand, so that has an opening on th lubricating the end of the h in contact with the casing.

There is no extra expense in casting a sheave 5o with these pockets, and the cost of filling them with graphite or other suitable lubricant is but trifling.

By this arrangement of pockets, filled as aforesaid, the sheave is self-lubricating and 5 5 will last a long time without any attention.

I am aware that pulleys and perhaps sheaves have been cast with chambers for containing oil, and with bushing arranged to hold lubricants. Such bushing materially increases the initial cost of the sheave, and the oil is soon exhausted from the said chambers, and has to be renewed often.

I am also aware that of wood have been pockets for the re hence I make no b tions.

WVhat I claim is- 1. A metal sheave having a series of pock- 7o ets cast therein, arranged around and opening into the axial bore of the sheave, for retaining graphite or other suitable lubricant, substantially as set forth.

2. A metal sheave having a series of pock- 75. ets cast therein, arranged around and opening into the axial bore of the sheave, the outer pocket also opening through the end walls of the hub of the sheave, substantially as set forth. 80

3. In a metal sheave, the combination,with a series of pockets cast therein, arranged around and in open relation with the axial bore of the sheave, and the outer pockets opening also through the respective ends of the hub, 8 of graphite or other suitable lubricant packed in said pocket, substantially as set forth.

In testimony whereof I sign this specification, in the presence of two witnesses, this 8th day of June, 1885.

GEORGE A. FORD. Witnesses:

CHAS. H. Donna, ALBERT E. LYNoH.

ub where it comes journal-bearings made provided with recesses or ception of a dry lubricant; road claim to such construc- 

